Product Overview
When vibration monitoring points sit inside a hazardous area, the housing around the transducer matters as much as the sensor itself. The Bently Nevada 107770-01-03 Velocity Transducer Housing – CENELEC approved solves that problem. It combines a 330500 Velomitor Sensor with a 21128 Housing, preinstalled at the factory. The result is one CENELEC-approved assembly rated for Zone 1, Group IIC applications.
This unit ships new and original in factory packing. It carries a 12-month factory warranty. For oil, gas, and industrial automation teams, that means less assembly time and fewer compatibility questions on site.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 107770-01-03 |
| Model | Velocity Transducer Housing – CENELEC approved |
| Manufacturer | Bently Nevada |
| Mounting Thread Option | 01 = Unthreaded |
| Cable Exit Fitting Option | 03 = 1/2-14 NPT explosion-proof with cable gland seal |
| Hazardous Area Rating | CENELEC Zone 1, Group IIC |
| Safe Use Zones | Zone 0/1 and Zone 2 |
| Compliance | RoHS Directive 2011/65/EU |
| Condition | New & Original in Factory Packing |
Why This Housing Fits Hazardous-Area Monitoring
The 1/2-14 NPT cable exit fitting with cable gland seal is the standout detail. It gives installers a sealed, explosion-proof cable entry point. The unthreaded mounting option (01) suits installations where the housing is clamped or secured by other means. Together, these options make the 107770-01-03 practical for tight or unusual mounting positions.
The CENELEC Zone 1, Group IIC rating places this housing in a serious category. Group IIC covers the most easily ignited gas atmospheres. Zone 1 means the location can have explosive gas mixtures during normal operation. For refinery compressor decks, offshore wellhead areas, and gas processing skids, that rating is often non-negotiable.
Comparison: This Housing vs. Standard Transducer Mounts
| Feature | 107770-01-03 | Typical Standard Housing |
|---|---|---|
| Hazardous area approval | CENELEC Zone 1, Group IIC | Often none or Zone 2 only |
| Cable entry | 1/2-14 NPT explosion-proof with gland seal | Basic conduit entry |
| Factory assembly | 330500 sensor + 21128 housing preinstalled | Separate sensor and housing |
| RoHS compliance | Yes, Directive 2011/65/EU | Varies |
This comparison shows why the 107770-01-03 is not a generic mount. It is a purpose-built assembly for classified locations.
Installation and Safe Use Notes
For Zone 0/1, the equipment must connect to equipment meeting the listed entity parameters. Cables type A or B (per EN 60079-25) must respect the cable parameters listed with the entity parameters. For Zone 2, the supply electrical parameters shall not exceed the values in the tables above. Always follow the manufacturer’s safety manual and verify the installation meets local hazardous-area codes.
Applications in Oil, Gas, and Automation
A gas plant in a Zone 1 area needs reliable vibration data from compressors. The 107770-01-03 provides a sealed, approved housing that keeps that data path intact. An offshore platform with limited deck space benefits from the factory-preinstalled sensor and housing. The unthreaded mount allows flexible positioning. In industrial automation, this housing supports condition monitoring on critical rotating equipment where standard housings would not meet area classification.
Selection Checklist
Before ordering, confirm your area classification matches CENELEC Zone 1, Group IIC. Check that the 1/2-14 NPT cable entry fits your gland and cable type. Verify the unthreaded mounting suits your bracket or clamp design. If you need a different thread or cable exit, other option codes exist in the 107770 series. Contact Oil AutoTech today for pricing and availability. We offer hands-on technical selection help and fast dispatch, worldwide.
Please verify current lifecycle status and availability with Oil AutoTech before ordering.
